13659568 has 40 divisors (see below), whose sum is σ = 30185568. Its totient is φ = 5932032.

The previous prime is 13659557. The next prime is 13659571. The reversal of 13659568 is 86595631.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1605 + ... + 5467.

Almost surely, 2^13659568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13659568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15092784).

13659568 is an abundant number, since it is smaller than the sum of its proper divisors (16526000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13659568 is a wasteful number, since it uses less digits than its factorization.

13659568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901 (or 3895 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The square root of 13659568 is about 3695.8852796049. The cubic root of 13659568 is about 239.0446279062.

It can be divided in two parts, 1 and 3659568, that added together give a square (3659569 = 1913²).

The spelling of 13659568 in words is "thirteen million, six hundred fifty-nine thousand, five hundred sixty-eight".